We are interested in knowing if the following frequency distribution is normally distributed. The population mean and standard deviation of the data are 600 and 160, respectively. 
If the distribution was normally distributed, what is the probability that an observation would be a member of the "800 up to 1000" class?
Definitions:
Rorschach
A projective psychological test consisting of inkblots presented to individuals to interpret, used to examine their personality characteristics and emotional functioning.
TAT
Thematic Apperception Test, a projective psychological test that involves creating stories about ambiguous scenes and images to uncover underlying thoughts and feelings.
Objective Tests
Tests designed to measure an individual's performance without subjective judgment, often featuring standardized questions and answer choices.
Psychoanalysis
A therapeutic approach founded by Sigmund Freud that aims to explore unconscious desires and conflicts as they manifest in behavior and mental disorders.
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